Skip to content

Instantly share code, notes, and snippets.

@ajithbh

ajithbh/get_mac_addr.c

Created June 1, 2014 13:10
Show Gist options
  • Save ajithbh/7505602f57fc9cd9f45b to your computer and use it in GitHub Desktop.
Save ajithbh/7505602f57fc9cd9f45b to your computer and use it in GitHub Desktop.
Download ZIP
Get MAC Address
Raw
get_mac_addr.c
int get_mac_addr(char *mac_addr)
{
int sockfd;
struct ifreq ifr;
if ((sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP)) >= 0) {
strncpy(ifr.ifr_name, "eth0", IFNAMESIZE);
ifr.ifr_addr.sa_family = AF_INET;
if (ioctl(sockfd, SIOGIFHWADDR, (char*) &ifr) == 0) {
sprintf(mac_addr, "%02X:%02X:%02X:%02X:%02X:%02X",
(unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[0], (unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[1],
(unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[2], (unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[3],
(unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[4], (unsigned char) ifr.ifr_ifru.ifru_hwaddr.sa_data[5]);
return 0;
}
}
/* error */
return -1;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment